Same as protective;
1- It prevents the smell of the meals to mix each other.
2- It prevents the food from drying and getting dust on.
Also Thermo Cover; keeps the temperature of the food same for long time.
1- Thermo Cover can preserve the temperature at +4°C & +6.5°C degrees for 2 hours in an environment with 20°C temperature
2- For the food, that needs to be served hot, it can preserve the temperature maxium 15-20 minutes .